1/*
2 * Copyright (C) 2015 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 *      http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17#include "io/FileSystem.h"
18
19#include "androidfw/StringPiece.h"
20#include "utils/FileMap.h"
21
22#include "Source.h"
23#include "io/FileStream.h"
24#include "util/Files.h"
25#include "util/Maybe.h"
26#include "util/Util.h"
27
28using ::android::StringPiece;
29
30namespace aapt {
31namespace io {
32
33RegularFile::RegularFile(const Source& source) : source_(source) {}
34
35std::unique_ptr<IData> RegularFile::OpenAsData() {
36  android::FileMap map;
37  if (Maybe<android::FileMap> map = file::MmapPath(source_.path, nullptr)) {
38    if (map.value().getDataPtr() && map.value().getDataLength() > 0) {
39      return util::make_unique<MmappedData>(std::move(map.value()));
40    }
41    return util::make_unique<EmptyData>();
42  }
43  return {};
44}
45
46std::unique_ptr<io::InputStream> RegularFile::OpenInputStream() {
47  return util::make_unique<FileInputStream>(source_.path);
48}
49
50const Source& RegularFile::GetSource() const {
51  return source_;
52}
53
54FileCollectionIterator::FileCollectionIterator(FileCollection* collection)
55    : current_(collection->files_.begin()), end_(collection->files_.end()) {}
56
57bool FileCollectionIterator::HasNext() {
58  return current_ != end_;
59}
60
61IFile* FileCollectionIterator::Next() {
62  IFile* result = current_->second.get();
63  ++current_;
64  return result;
65}
66
67IFile* FileCollection::InsertFile(const StringPiece& path) {
68  return (files_[path.to_string()] = util::make_unique<RegularFile>(Source(path))).get();
69}
70
71IFile* FileCollection::FindFile(const StringPiece& path) {
72  auto iter = files_.find(path.to_string());
73  if (iter != files_.end()) {
74    return iter->second.get();
75  }
76  return nullptr;
77}
78
79std::unique_ptr<IFileCollectionIterator> FileCollection::Iterator() {
80  return util::make_unique<FileCollectionIterator>(this);
81}
82
83}  // namespace io
84}  // namespace aapt
85